Water Circulation; Thermostat Pocket; Noise Production - REMEHA Gas 310 ECO Technical Information

Suitable chemicals and their use should be discussed
with a specialist water treatment company prior to car-
rying out any work. The specification of the system and
manufacturers recommendations must be taken into
account, along with the age and condition of the system.
New systems should be flushed thoroughly to remove all
traces of flux, debris, grease and metal swarf generated
during installation. Care to be taken with old systems to
ensure any black metallic iron oxide sludge and other
corrosive residues are removed, again by thoroughly
flushing, ensuring that the system is drained completely
from all low points.
NOTE: Please ensure that the new boiler plant is not
in circuit when the flushing takes place, especially if
cleansing chemicals are used to assist the process.
Under no circumstances is the boiler to be operated
with cleaning chemicals in the system.
To summarise:
- Minimise water loss
- Prevent pumping over in open vented systems
- Provide adequate air venting at all high points
- Maximum chlorine content of 200 mg/ 1
Take advice on the suitability of inhibitors for use with
aluminium boilers
MAX pH of 8.5 when using additives (max. pH of 9
without additives).
If water treatment is used, we recommend the following
products:
'Copal' manufactured by:
Fernox Manufacturing Company Ltd.
Britannia Works
Clavering
Essex, CB1L 4QZ
Tel No: 0179 955 0811
Fax No: 0179 955 0853
or:
Sentinal 'X100' manufactured by:
BetzDearborn Ltd
Sentinal
Foundry Lane
Widnes
Cheshire WA8 8UD
Tel No: 0151 424 5351
Fax No: 0151 420 5447
Supplied By www.heating spares.co Tel. 0161 620 6677
For the correct dosage and for further information on
water treatment or system cleaning we advise direct
contact with either of the above companies.
7.4.4 Safety valve
A safety valve should be fitted in accordance with BS
6644. The flow pipe on the Remeha Gas 310 ECO
includes a fitting, which can be used for a safety valve,
size 1½" BSP (F).
Recommended minimum safety valve size of 25mm for
the 5 & 6 section, 32mm for the 7 section, 38mm for the
8 section and 50mm for the 9 section (all full bore type).

7.4.5 Water circulation

Provided that the factory pre-set high limit and flow
temperatures are not altered and the Remeha modulat-
ing controls are used no minimum flow rate is required
as the 'abc ® ' system will monitor these conditions and
reduce the boiler output, finally shutting down until flow
conditions improve. As a result, the boiler is virtually
unaffected by low water flow.

7.4.6 Thermostat pocket

A thermostat pocket (7mm i/d plain pocket) is supplied
as standard in the flow pipe for an external control/ BMS
temperature sensor.

7.4.7 Noise production

The average noise level measured at 1-m distance
around the boiler is < 60 dBA at full output, avoiding the
need for additional acoustic measures.
7.5 Multiple boiler installation
The Remeha Gas 310 ECO can be installed individually
or in a multiple boiler installation. The narrow width and
depth of the boiler and its ability to be mounted closely
together provides a high output within a small floor area
(see fig. 05)
A "DUO" version the Gas 610 (6 to 9 section only) will
also be as a dual cascade unit.
Advice and schematic drawings are available on
request, contact Broag Technical Dept.
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